#80193 of 105511
London, United Kingdom
Sperm In Uterus
Professor P. Motta, Department Of Anatomy, Rome University
Photograph - Photograph
False-colour scanning electron micrograph of human sperm migrating up the uterus. They are travelling across a background of uterine mucosa cells (purple, yellow) interspersed with tufts of cilia (one at right). The hair-like surface of the mucosa gives sperm a chemical protection if they are to reach and fertilize the female egg. The head of each sperm contains the human genetic material, and its whiplash tail is responsible for movement. 200-300 million sperm start the journey through the uterus and fallopian tubes, lasting 12 to 24 hours, but only a few hundred may reach the egg. Magnification x2600 at 6x7cm size.
May 6th, 2013
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